package com.spyz.P11_ETL_1;

import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

public class LogMapper extends Mapper<LongWritable, Text, Text, NullWritable> {

    @Override
    protected void map(LongWritable key, Text value, Mapper<LongWritable, Text, Text, NullWritable>.Context context) throws IOException, InterruptedException {
        String line = value.toString();

        boolean result = parseLog(line);

        if (!result){
            return;
        }
        context.write(value, NullWritable.get());
    }

    private boolean parseLog(String line) {
        // 判断日志长度是否大于11
        if (line.length()>11){
            return true;
        }else {
            return false;
        }
    }
}
